Punching die for perforating machines



. p 1936- s. E. ROSENBERG 2,055,911

PUNCHING DIE FOR PERFORATING MACHINES Filed Aug. 15, 1955 v 2 Sheets-Sheet 1 slzzs p 29, 1936- s. E. QROSENBERG I 2,055,911

PUNCHING DIE FOR PERFORATING MACHINE IS Filed Aug. 15, 1955 2 Sheets-Sheet 2 1 10 /7 4 I j/ZWW w if WZZM/dfi M 1 f4 ww ww Patented Sept. 29, 1936 UNITED STATES PATENT OFFICE PUNCHING DIE FOR PERFORATING MACHINES 11 Claims.

This invention relates to machines for ornamenting shoe uppers by cutting perforations therein, and includes that portion or element of a perforating machine which comprises a punch plate having tubular perforating punches projecting upwardly therefrom, .and means for supporting a shoe upper member, or other work to-be ornamented, above the punch plate so that the work is depressed and punched when the usual platen above the punch plate is depressed. The punch plate is supported by :a suitable fixed .bed under the platen. The work may be supported by a yielding stripper plate, or any other suitable means.

The invention is embodied in a perforating machine punching die which includes a punch plate, a row of punches fixed to and rigidly supported thereby against downward movement and arranged to form a row of holes in edge portions of a member such as a vamp and quarter piece of a shoe upper, a plurality of supplemental punches rigidly supported against downward movement by said plate, means movably supporting the supplemental punches to permit the addition of :one or more of said punches to the row of fixed punches, and thereby lengthen the row of punches and of the perforations formed thereby, and manually operable selectingmeans including means adapted to simultaneously move the supplemental punches to operative and inoperative positions, and means for locating each supplemental punch in a row-lengthening position, so that the row may include one, or all, of the supplemental punches, and the length of the row of perforations may be varied in accordance-with the size of the shoe upper member.

f the accompanying drawings forming a part of this specification,

Figure 1 shows in perspective a perforating machine punching die embodying the invention, and a piece of work in position to'beoperated on.

Figure 1a is a view similar to Figure 1 showing a modification, the stripper plate and work being omitted.

Figure 2 is a top plan view of the punching die, the supplemental punches being shown in inoperative positions.

Figure 3 is a view similar to Figure 1, showing five of the supplemental punches in operative .positions, and another in an inoperative position.

A stripper plate is shown partly broken away by Figures 1, 2, and 3.

Figure 4 is a section 'on line 4-4 of Figure 3.

Figure 5 is a section on line 55 of Figure 3, showing also in section the workand the platen.

figure a6 is a view similar to portions of Figure 5., showing the platen depressed.

Figure -FZ is a .top plan view of a modified form of the punching die. Figure 8 is a section on line 8E8 .of Figure 7. 5

The same reference characters indicate the same parts in all .of the figures.

In the drawings I'Z designates a punch plate having a row of fixed upwardly projecting, preferably tubular, punches :l3, suitablyattached to 10 the punch plate. This punch plate is preferably made of aluminum or .an alloy thereof.

16 designates a series of carriers each fulcrumed at IS on the punch plate. Each carrier is movable on the punch plate and supported thereby against downward movement. Attached to the longer arm of each carrier, asby a base or holder 16]) and a screw 116i, (Figure :5), is a supplemental tubular punch ll 1. The carriers it are organized .to permit the successive addition of 0 each of the supplemental punches I! to the row of fixed punches I3. Figure .3 shows five of the supplemental punches added to the row, the carriers having these punches being releasably confined to retain the supplemental punches in the row, by suitable :detents such as spring pressed balls I.8, (Figure 5 located in orifices in the punch plate 42 .and entering shallow recesses I9 in the carriers.

.As shown by Figure 5 each of the carriers is 3'0 movable .by the selecting lever hereinafter described .to separate the supplemental punches I! from .the row and confine the carriers against a fixed stop 20.

The inner arms of thecarriers 16 are "provided with tapered end portions i 62. 21 designates -a selecting lever adapted to simultaneously displace the carriers as shown :by Figure 2, and thus remove the supplemental punches I'l from-the active now. said lever has a longitudinal slot 22 receiving :a .fulcrum stud :23 fixed to the punch plate, .andmeans such as :a projection '24, adapted to contact with one of the carrier levers 1-6, and a projection 25 adapted to contact with the tapered lend-portion .1262 of any carrier.

The slot .22 permits an endwise movement of the lever 21 in addition :toits swinging movement on the fulcrum stud 23.

It will now be seen that when the lever 2| is adjusted as shown ;by Figure '2, it is adapted to rock .all .of the carriers away from the active row .of punches, .or torock the .carrier nearest to the active row so as to move its punch into active position. By endwise movement of the lever, it :can be adjusted to rock any additional number of carriers. For example, if the lever is adjusted as shown in Figure 3, it is adapted to rock all but one of the carriers so as to move their punches into active position.

In each of the figures of the drawings except Figure 1a is shown a stripper plate 26 yieldingly supported above the punch plate l2 by springs 21 housed in cavities in the punch plate, and supporting studs 28 fixed to the stripper plate and bearing on the springs. V

The stripper plate is provided as usual with orifices 29 which receive the upper ends of the fixed punches when the plate is depressed by a platen conventionally shown by Figure 5,

and constituting a well known member of a perforating machine. a

The stripper plate is provided with an elongated opening 30, (Figure 3), exposing all of the movable punches whether in active or inactive position. The stripper plate may be omitted as shown by Figure la, and any other suitable means such as an elastic rubber bed or block 260 may be substituted therefor to yieldingly support the work. When the stripper plate 26 is employed, a shoe upper member which includes a vamp portion 3| and a quarter portion 32, is positioned on said plate as shown by Figure l by gage pins or stops 33, a portion of said member being over the stripper plate opening 36. When the quarter portion of the upper member requires only the number of perforations which may be formed by the fixed punches |3, all of the supplemental punches are displaced as shown by Figure 2, so that when the upper member is forced downward only the fixed punches perforate said member. When the quarter portion requires a greater number of perforations, the length of the row of operative punches is increased as indicated by Figure 3 by moving supplemental punch carriers to add the desired number of supplemental punches IT to the row of fixed punches, so that the next depression of the shoe upper member will cause the formation of a longer row of perforations.

The lever 2| is provided with a pin 36 which rides in suitable guide slots in the stripper plate 25. When the lever is swung to the left so as to shift the movable punches to inactive position, the pin 36 rides in a single arcuate slot 35 which is so located with reference to the fulcrum pin 23 as to cause the projection 24 to engage the nearest carrier I6 well above its pivot l5, as illustrated in Figure 2. Thus all the movable punches in active position are simultaneously shifted to inactive position. When the lever 2| is swung to the right, the pin may enter anyone of a number of parallel slots 31 connected by a slot 38, there being as many slots 31 as there are carriers I6. The lower ends I62 of the carriers |6 are arranged in stepped array, and the several slots 3'! are so related to these ends as to cause the projection 25 to engage any one of them according to the particular slot entered by the pin 36.

In this embodiment of the invention there are six punch carriers and supplemental punches and six stops formed by end portions of the slots 35 and 31, said stops being designated by the reference numerals 4, 5, 6, i, 8, and 9.

Figure 3 shows five supplemental punches added to the row of fixed punches, this addition being caused by moving the selecting lever to the position shown by full lines in Figure 3, the sixth supplemental punch remaining inoperative. The selecting lever stud 36 now abuts stop 8.

One supplemental punch may be added to the row by causing the stud 36 to abut the stop 4. Two supplemental punches may be added to the row by causing the stud to abut the stop 5, and

so on.

When the selecting lever is moved to the position Shown by Figure 2 to cause an inoperative location of all of the supplemental punches, its stud 36 abuts a stop 3 formed by one end of the elongated slot 35. The lever is thus confined so that the supplemental punch carriers are clamped between the stop 26 and the lever projection 24.

46 designates a trimming knife fixed to the punch plate and arranged to trim the edge of the counter portion of the upper member 3| on a line parallel with a row of perforations formed therein. The stripper plate opening 30 is arranged to expose the cutting edge of the knife and permit the depression of the platen 45 to force the upper member against the knife, as shown by Figure 6, and cause the trimming action thereof..

4| and d2 designate digit rests fixed to the punch plate and projecting therefrom at opposite sides of the lever 2|, the arrangement being such that the thumb of the operators hand may bear on one of said rests and the fingers on the other rest when the muscular force of the hand is being exerted to move the lever to the positions shown by Figures 2 and 3.

Therow of fixed punches may be extended from the straight portion to act on other portions of the margin of the upper member.

The numerals 3, 4, 5, 6, 8, and 9 may be stamped on the stripper plate. The numeral 3 cooperates with the lever stud 36 in indicating that the supplemental punches are inoperatively displaced when the selecting lever is adjusted as shown by Figure 2. The numerals 4, 5, 6, I, 8, and 9 cooperate with the stud 36 in indicating successive positions of the selecting lever required to locate the carriers in position to operatively locate the supplemental punches. The stripper plate may be provided with other numerals 3, 4, 5, 6, I, and 8 located beside the opening 30, as shown by Figure 3, to assist the operator in determining what supplemental punch, or punches, should be operatively located.

The invention may be embodied in the modified form shown by Figures '7 and 8. The element shown by these figures includes the punch plate |2, the fixed punches l3, and a supplemental punch l7, and may include either the stripper plate 26, or the fixed plate 26| (Figure la), the stripper plate being shown in this instance.

The punching die shown by Figures 7 and 8 is adapted to permit the elongation of a row of perforations formed by the fixed punches, by a supplemental punch fixed to a carrier 2||l supporting the supplemental punch, and movable on the punch plate, so that the supplemental punch may be adjusted to an operative position at one end of the row of fixed punches, and permit the formationof a relatively long row of perforations, and to an inoperative position permitting the formation of the perforations only by the fixed punches.

The carrier 2 I0 is a two-armed lever fulcrumed at. 230 to the punch plate, one arm of said lever carrying the supplemental punch H.

I provide stop means arranged to arrest the lever 2H2 with the supplemental punch in either the operative position shown by full and dotted lines (Figure 7), or in the inoperative position shown wholly by dotted lines. Said'stop means may be embodied in an arcuate slot45 formed in the stripper plate 26 and a stud 46 fixed to the lever 2H1, the slot 45 being so arranged that the stud 46 is adapted to abut the ends of the slot. Additional stop means, or detents, maybe provided by spring-pressed balls I 8 arranged to enter a shallow recess IS in the under side of the lever 210.

It will be seen that the element shown by Figures 7 and 8 is intended for use when only a minimum increase in the length of the row of perforations in a quarter member 32 is to be effected by supplemental punching means. The member to be punched may be held in place by a resilient clip 49. It will be seen that the function of the supplemental punch, or punches, is to enable the die to be used in perforating shoe upper parts of various lengths, the fixed punches being used in forming a row of perforations of minimum length, and the supplemental punches in forming a longer row of perforations.

I claim:

1. A unitary punching die comprising a punch plate, two series of punches supported thereby against downward movement, the punches of one series being fixed to the punch plate and those of the other series being supplemental and movable on said plate, means movably supporting the supplemental punches on the punch plate so that any desired number of the supplemental punches may be either added to or subtracted from the series of fixed punches to vary the length of a row of perforations formed by the die, and manually operable selecting means for locating any desired number of the supplemental punches either in a row-lengthening or a row-shortening position.

2. A perforating machine punching die comprising a punch plate, a row of punches fixed thereto and a row of supplemental punches rigidly supported by the punch plate against downward movement, and means movably and independently supporting the supplemental punches and organized to permit the latter to be operatively added to the row of fixed punches to increase the length of a row of perforations formed by the die, and inoperatively located so that the row includes only the fixed punches, the supplemental punch supporting means being organized also to permit the addition of one or all of the supplemental punches to the row, and manually operable selecting means including means for locating the supplemental punches in alternately operative and inoperative positions.

3. A perforating machine punching die comprising a punch plate, a row of punches fixed thereto and a plurality of movable punch carriers rigidly supported by the punch plate against downward movement, supplemental punches supported by the carriers, said carriers being organized to permit the successive addition of the supplemental punches to the row, to increase the length of a row of perforations formed by the die, and manually operable selecting means including means for simultaneously moving the punch carriers to inoperatively locate the supplemental punches, and means for successively locating each carrier with its supplemental punch in a rowlengthening position.

4. A perforating machine punching die comprising a punch plate having a row of fixed punches, a plurality of movable punch carriers supported by said plate, supplemental punches supported by the carriers, said carriers being organized to permit the successive addition of the supplemental'punches to the row, to increase the length of a row of perforations formed by the die, a manually operable selecting lever pivotally and slidably connected with the punch plate and having means for simultaneously moving the punch carriers and their punches to inoperative positions, and means for successively locating each carrier with its punch in its row-lengthening position, a member of said'die and the selecting lever being provided with means for guiding the lever in a path causing the simultaneous inoperative location of the carriers and their punches, and in a plurality of paths causing the successive operative location of each carrier and its punch in a row-lengthening position.

5. A perforating machine punching die comprising a punch plate having a row of fixed punches, a plurality of movable punch carriers each composed of a two-armed lever fulcrumed on the plate, supplemental punches carried by the outer arms, the carriers being movable to add and withdraw the supplemental punches to and from the row, to either increase or decrease the length of a row of perforations formed by the die,.a manually movable selecting lever fulcrumed to swing on the punch plate and adapted to move endwise thereon, said lever being provided with displacing means for simultaneously moving said carriers to locate the supplemental punches in inoperative positions, and with means for successively engaging the inner arms of said carriers to locate the supplemental punches in a row-lengthening position, a member of said die being provided with a series of interconnected slots in which a stud or runner on the selecting lever is movable, end portions of said slots constituting stops limiting movements of said lever, the arrangement being such that the carriers are simultaneously movable by the selecting lever to inoperatively locate the supplemental punches, and are movable successively by said lever to operatively locate any desired number of the carriers and their punches.

6. A perforating machine punching die comprising a punch plate having a row of fixed punches, a plurality of movable punch carriers each composed of a two-armed lever fulcrumed on the plate, supplemental punches carried by the outer arms, the carriers being movable to add and withdraw the supplemental punches to and from the row, to either increase or decrease the length of a row of perforations formed by the die, a yieldingly supported stripper plate having an opening formed to expose the supplemental punches added to the row, a manually movable selecting lever fulcrumed to swing on the punch plate and adapted to move endwise thereon, said lever being provided with displacing means for simultaneously moving said carriers to locate the supplemental punchesininoperative positions, and with means for successively engaging the inner arms of said carriers to locate the supplemental punches in a row-lengthening position, a member of said die being provided with a series of interconnected slots in which a stud or runner on the selecting lever is movable, end portions of said slots constituting stops limiting movements of said lever, the arrangement being such that the carriers are simultaneously movable by the selecting lever to inoperatively locate the supplemental punches, and are movable successively by said lever to operatively locate any desired number of the carriers and their punches.

7. A perforating machine punching die as specified by claim 6, comprising also a trimming knife fixed to the punch plate and exposed by the stripper plate opening, said knife being arranged to trim surplus material from an upper member.

8. A perforating machine punching die as specified by claim 4, comprising also digit rests fixed to the punch plate and projecting therefrom at opposite sides of the selecting lever.

9. A perforating machine punching die comprising a punch plate, a plurality of punches fixed thereto and arranged to form a relatively short row of perforations, a supplemental punch supported by the punch plate against downward movement, a carrier supporting the supplemental punch and movable on the punch plate so that the supplemental punch may be adjusted to an operative position permitting the formation of a longer row of perforations by the die, and to an inoperative position permitting the formation of a shorter row of perforations only by the fixed punches, said carrier being a two-armed lever fulcrumed on the punch plate, one arm of said lever carrying the supplemental punch, and stop means arranged to arrest said lever with the supplemental punch in either of said positions.

10. A punching die for a perforating machine, comprising a punch plate having a plurality of punches fixed thereon, an auxiliary punch movable into and out of an active position adjacent to the fixed punches, a carrier for said auxiliary punch bearing directly on the upper face of said plate and slidable thereon about a fixed pivot, a stripper plate yieldingly supported above said punch plate, said stripper plate having openings registering with all said punches, and means projecting beyond the edge of said stripper plate and actuable to rock said carrier about its pivot so as to move the auxiliary punch into and out of active position.

11. A punching die for a perforating machine, comprising a punch plate, a plurality of punches fixed on said plate, a plurality of auxiliary punches supported on said plate and movable thereon into and out of active position, a lever slidably rockable on said plate about a variable fulcrum to move auxiliary punches into or out of active position according to the direction of swing of said lever, and means for guiding said lever so that rocking movement in one direction shifts all said auxiliary punches to inactive position and rocking movement in the other direction shifts any selected number of said auxiliary punches into active position.

STIG E. ROSENBERG. 

